Finding the Fourth Proportional to 72,715.40, 100,313.56 and 42,501.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,715.40 : 100,313.56 = 42,501.99 : x
2. Step 2: Convert to fraction form
   72,715.40/100,313.56 = 42,501.99/x
3. Step 3: Cross multiply
   72,715.40x = 100,313.56 × 42,501.99
4. Step 4: Simplify right side
   72,715.40x = 4,263,525,923.98
5. Step 5: Solve for x
   x = 4,263,525,923.98/72,715.40
6. Step 6: Final answer
   x = 58,633.05